The four social revolutions and its consequences on people.

The first social revolution is the hunting and gathering societies transforming into horticultural and pastoral societies. This kind of societies allowed people to stop moving around and made permanent settlements. With dependable sources of food, human societies grew bigger, and tools evolved. This stimulated trade and set the stage for social inequality. Materialism brought about war and feud. And wars brought about power and wealth. The second is agricultural societies. This kind of societies emerged …

…tried and cross-examine witnesses. Women also gained greater rights than before. And the fourth is the microchip, which allows the service industries to emerge. The United States have more than half it work force in service industries -- health, education, research, government, counseling, banking, investments, sales, law, and mass media. This type of societies is based on information rather than manufacturing. People working in this areas provide knowledge which others are willing to pay for.